Model DM25 Steam Trap
Features
- Single blade element
- Stainless steel internals
- Built in strainer & check valve
- Modulating discharge
- Continuous air & CO2 venting
- Fast start capabilities
- No loss of live steam
Description
Max. Differential Pressure - 320 PS
| Line sizes | |
| Model DM25 | 1/2", 3/4" |
| End connections threaded (BSP, NPT) socket weld or flanged | |
| Materials | |
| Body & Cover: | Forged carbon steel |
| Valve Seat: | Stainless steel |
| Valve Cone: | Stainless steel |
| Strainer: | Stainless steel |
| Bimetal: | Stainless steel |
| Nuts & Bolts | Steel |
| Gasket: | Flexible graphite |
| Mounting | |
| From horizontal to vertical. Self draining and freeze resistant when mounted in vertical position. | |
Operation
On initial start up the steam system, large amounts of cold condensate and air are present in the system. At this point the bimetallic strip of the delta element relaxes and fully opens the valve assembly to quickly expel the high volume of non-condensate gases and cold condensate through the discharge port.
As the element senses an increase in the condensate temperature the bimetal expands and raises the stem to modulate the flow. Just below the temperature of saturated steam the seat will close tightly to prevent live steam from discharging.
Application
Bestobell model DM25 is a light performance,energy efficient steam trap that incorporates a 'Y' type strainer and integral check valve. It provides long term reliable service on steam main dripleg and critical tracing applications with differential pressures up to 320 PSI.
| Size | A | B | C | D | E | Wt |
|---|---|---|---|---|---|---|
| 1/2" | 4" | 5" | 3 1/4" | 3 1/4" | 2 1/4" | 5.5lb |
| 3/4" | 4" | 5" | 3 1/4" | 3 1/4" | 2 1/4" | 5.5lb |
Capacity chart: Condensate Capacity (1b/hr) at Pressure Differential
| Size | PSI Differential | 50 | 100 | 120 | 150 | 200 | 250 | 300 | 320 |
|---|---|---|---|---|---|---|---|---|---|
| 1/2" |
Cold
start up Hot Running Load |
1500 70 |
1950 80 |
2050 85 |
2200 90 |
2400 100 |
2600 105 |
2700 110 |
2800 110 |
| 3/4" |
Cold start up Hot Running Load |
1500 70 |
1950 80 |
2050 85 |
2200 90 |
2400 100 |
2600 105 |
2700 110 |
2800 110 |
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